Brake-shoe.



H. v-JONES. BRAKE. 151101:.`

LPPLIGLTIOB FILED IAE. 9, 1911.

995,014. Patented June 1'3, 1911.

U NTITED sTATpsfgEN'r OFFICE.

HAnRYJoNns, or sUrrEnN, NEW YORK, Assioma To EDWARD H. rALLoWs, or NEWYORK, N. Y.

BRAKE-SHOE.

Specification of Letters Patent. Patented June 1.3, 11911,

Application led ltarch 9, 1911. Serial No. 613,215.

is used; and the object of myl invention is to provide a brake shoehaving a plurality of upon or above another, and so arranged that.

corrugated metallic' inserts superposed vone ad]acent edges thereofcross one another, or intersect a lurality of times throughout ltheshoe, where iron, 'separatedv by stri s of wrought "metal, and wherebythe re ative disposition of the cast and wrought metal iscontinuouslychanging'as the shoe'is worn Vaway vand the'format-ion ofgrooves in the l 'Figsy 1 and -2,7and; Fig. 4 is a viewilluslating atcertain' feature of my 'improved In the.drawing,"5 represents the bodyportion of my rovedbrake shoe, the same being formed i m cast metal, andpreferably fromcast'iron of a' composition such that a. maximum offrictional and 'wearing' qualities will be secured; and 6, 7, are aplurality ofinserts embedded in the body portion and each formedpreferabl from a stri or ribbon of wroughtjmeta such as mil steel orwrought iron, corrugatedy throughout its length and bent or doubled un.1tself sc as to extend several times longltudinallyo'f the brake shoe,said strips bemg arranged edgewiseffwith reference-.to the wearing faceof the'shoe as shown. While I bares-'hewn but twosuch.' I use `more ythe entire body portion of the4 shoe is subdivided into a largenumber'of areas of cast igure 1 is a adjacent strips wedge-shaped edgeof the strip and 4 'contracte l than two in case an extra thickshbe-.isrequired. The strips or inserts are superposed one upon 'the'other as shown, and they` are so arranged that the upper edge oa lowerstrip-intersects or crosses the adjacent. lower edge of the next higherVstrip a lurality of?.

` timesv throughout the shoe, as wil `be understood from Fig. 2 ofthedrawing.

In forming my improved brake shoe, the inserts'G, 7, aresecured togetherin any suitable way, and then placed within the mold into which thefluid metal is Vpoured, ythe inserts becoming embedded in the bodyportion as above explained. The strips from which the inserts are formedafter having been corrugated and doubled, as aforesaid, are curvedlongitudinally so as to corres ond, ap roxirnately with the curvature oft e car. wlieel for which the shoe is adapted, the effect of-which istostretch and flatten the upper portion, and contract and curve to agreater degree the lower portion of the strip. This result visillustrated by, means of Fig. 4, wherein A shows a portion of twoadjacent segments of an insert, corrugated and bent upon itself, but notas yet curved longitudinally. Whenthe insert is curved as aforesaid,theupper edgesl of the segments ofthe Astrip are stretched and assume aform somewhat as shown at B, while the lower edges are contracted andassume a form somewhat as shown at 4C. This laction results-'1n theformation ofjspaces between n #1n a sense, beingv elongated and narrowed't the upper v nd widened at the lower edge, -the result being that thebodies .of cast metal,- occupying such spaces i in the completed shoe,are of such a form as may 'not fall from between the strips should theybecome broken away' from' the bodyportion when the shoe .is in use. Thusis' thel entire shoe held together by the wrought metalstrips or insertseven4 should. itbe broken in service; Finally, the corrugated. formoriginally imparted to the in-v serts, together with the distort-ionwhich resultsfrom curving .the same as ex lained,

produces a'shoe in which th relative disposition of .the cast andwrought metal in the face of the shoe `is continuously changing as the`shoe` is worn away, and the formation of grooves in the car wheelthereby prevente Havingthus described and irplained my inventioml claimand desire to lsecure by v Letters Patent 1,. A brake shoe comprising'abody pori.' n'formed from cast metal, and a plurality super-posedcorrugated inserts embedded vom and so' arranged .that the upper edgelower insert crosses the adjacent lower edge ai? the next higher. inserta tuz'gs throughout the shoe.l

A, brake shoecomprising a body portien formed 'from cast metal, and aplurality of superposed corrugated strips of wrought metal embedded'therein and' so arranged 'that the upper edge of a lower strip-crossesand. recrossesthe adjacent lower edge of the nent higher stripthroughout the' shoe.

.3, A brake shoe comprising a body portion. formed from cast metal, anda plurality.

of superposed corrugated strips of 'wrought meta-l embedded therein,each of said strips t plurality of being bent orl doubled upon itelr soas to extend several times longitudinally of the shoe, the arrangementof said strips being such that the upper edge of a lower strip crossesthe adjacent lower edge of the next higher strip a plurality of timesthroughout the shoe.

4. A brake shoe comprising a body portion formed from cast metal, and aplurality of corrugated strips of Wrought metal ern- -bedded therein,Isaid-strips being located one above the other, so thatthey are Worn awayin succession as the shoe is used. Signed at Suern, in the county ofRockland and State of New York, this 27th day1 of February,'A. D. 1911.

HARRY JONES.

-Witnesses:

EUGENE M. GREEN, C. C. -Moneam

